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// Copyright (C) 2023 Free Software Foundation, Inc.
//
// This file is part of the GNU Proc Macro Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
#include "tokenstream.h"
#include "tokentree.h"
#include <cstring>
namespace ProcMacro {
namespace TokenStream {
TokenStream
TokenStream::make_tokenstream (std::vector<TokenTree::TokenTree> vec)
{
auto stream = make_tokenstream (vec.size ());
for (auto tt : vec)
{
stream.push (tt);
}
return stream;
}
TokenStream
TokenStream::make_tokenstream (std::uint64_t capacity)
{
auto *data = new TokenTree::TokenTree[capacity];
return {data, 0, capacity};
}
void
TokenStream::grow (std::uint64_t delta)
{
auto new_capacity = capacity + delta;
auto *new_data = new TokenTree::TokenTree[new_capacity];
std::memcpy (new_data, data, size);
delete[] data;
data = new_data;
}
void
TokenStream::push (TokenTree::TokenTree tree)
{
if (size == capacity)
grow (capacity);
data[size] = tree;
size++;
}
void
TokenStream::drop (TokenStream *stream)
{
for (std::uint64_t i = 0; i < stream->size; i++)
{
TokenTree::TokenTree::drop (&stream->data[i]);
}
delete[] stream->data;
stream->capacity = 0;
stream->size = 0;
}
extern "C" TokenStream
TokenStream__new ()
{
return TokenStream::make_tokenstream ();
}
extern "C" TokenStream
TokenStream__with_capacity (std::uint64_t capacity)
{
return TokenStream::make_tokenstream (capacity);
}
extern "C" void
TokenSream__push (TokenStream *stream, TokenTree::TokenTree tree)
{
stream->push (tree);
}
extern "C" bool
TokenStream__from_string (unsigned char *str, std::uint64_t len,
TokenStream *ts)
{
// FIXME: Implement using parser ?
return false;
}
extern "C" TokenStream
TokenStream__clone (const TokenStream *ts)
{
auto *data = new TokenTree::TokenTree[ts->capacity];
std::memcpy (data, ts->data, ts->size);
return {data, ts->size, ts->capacity};
}
extern "C" void
TokenStream__drop (TokenStream *stream)
{
TokenStream::drop (stream);
}
} // namespace TokenStream
} // namespace ProcMacro
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